Ladies and Gentlemen. Thank you very much for your patience. The new version of the plugin has now been released and will solve the problem of atto removing fontsize settings upon saving. Please upgrade the plugin at your earliest convenience.

I have been trying to replicate the problem you are experiencing, but I'm not entirely sure what the problem is. Could you please give me more details about the problem and perhaps some instructions on how to test it?

Also, the fontsize plugin is only for resizing text. It will not resize images (including smilies).